Not So Secure Secret security tests at airports yield unsettling results. airplane_sky.jpg l video.gif http://play.rbn.com/?url=swave/abc/g2demand/020701stark.rm&rpcontexturl=abcnews.go.com/sections/wnt/videofiles/Video/020701stark_video_context.html&rpurl=abcnews.go.com/sections/us/ abcnews_free.gif http://play.rbn.com/?url=swave/abc/g2demand/020701stark.rm&rpcontexturl=abcnews.go.com/sections/wnt/videofiles/Video/020701stark_video_context.html&rpurl=abcnews.go.com/sections/us/ PLAY headline